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RE: MPEG2-TS activity in Bugzilla

From: Alex Giladi <alex.giladi@huawei.com>
Date: Tue, 12 Jun 2012 19:12:36 +0000
To: Henri Sivonen <hsivonen@iki.fi>
CC: Mark Watson <watsonm@netflix.com>, Bob Lund <B.Lund@cablelabs.com>, Glenn Adams <glenn@skynav.com>, public-html WG <public-html@w3.org>
Message-ID: <76BB22813E02B04A882BEB9FFFF6BBA615EAF24B@SZXEML507-MBX.china.huawei.com>
Henri,

How do current or near-term implementations matter?
As you said below, market realities sometimes dictate the use of certain, possibly encumbered, technologies -- let the market sort it out. 
Not giving an example how to use a technology will not prevent its use if someone wants to use it.

If what really worries you is MPEG-2 TS as an encumbered technologies -- there is a nice analysis out there that shows it should be fairly possible to work around the few remaining non-expired MPEG-2 TS patents. 

Regards,
Alex.

P.S. Per MPEG-2 Video: I haven't heard anything about plans for adaptive streaming of MPEG-2 Video.

-----Original Message-----
From: hsivonen@gmail.com [mailto:hsivonen@gmail.com] On Behalf Of Henri Sivonen
Sent: Tuesday, June 12, 2012 5:25 AM
To: Alex Giladi
Cc: Mark Watson; Bob Lund; Glenn Adams; public-html WG
Subject: Re: MPEG2-TS activity in Bugzilla

On Thu, Jun 7, 2012 at 8:07 PM, Alex Giladi <alex.giladi@huawei.com> wrote:
> Yes, the text is non-normative.

What matters the most is who is planning to implement it and in what
context. Support for H.264/AAC/MP4 isn't normatively required, either,
but, still, it is increasingly the case that in order to render the
Web a browser needs to support H.264/AAC/MP4. Thus, leaving stuff
non-normative does not guarantee that encumbered technologies stay out
of the Web.

Who is planning to implement H.264/AAC/TS and in what context? Who is
planning to implement MPEG-2 video/legacy MPEG audio/TS and in what
context? By "context" I mean desktop browser, mobile browser, cable
set-top box, etc.

On Fri, Jun 8, 2012 at 3:15 AM, Alex Giladi <alex.giladi@huawei.com> wrote:
> In context of adaptive streaming, I believe that MPEG-2 TS will be also
> useful for HLS support as well.

Why isn't MP4 in DASH sufficient for H.264/AAC adaptive and live streaming?

-- 
Henri Sivonen
hsivonen@iki.fi
http://hsivonen.iki.fi/

Received on Tuesday, 12 June 2012 19:17:29 GMT

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